GE unveiled a prototype hybrid locomotive at its Ecomagination event in Los Angeles last week. The 4,000 hp locomotive uses a set of sodium nickel chloride (Na-NiCl2) batteries to capture and store energy dissipated during dynamic braking, as well as

Toyota has brought what it claims – with some justification, if it works –the ultimate eco-car a step closer to reality. The fuel cell hybrid vehicle (FCHV) was seen by Treehuggers last year following our report on testing of the vehicle in

Sweden's Scania has produced a standard-sized low-floor city bus that cuts CO2 emissions by up to 90 percent when fuelled with ethanol and saves at least 25 percent fuel, compared with a bus running on conventional petrol or diesel.

A report just released by the Union of Concerned Scientists gives Honda and Toyota the thumbs up in the who-is-the-greenest-auto-maker-of-them-all sweepstakes, while ranking Daimler Chrysler bottom of the league.